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Maximal neutrino mixing from a minimal flavor symmetry

Description: The authors study a number of models, based on a non-Abelian discrete group, that successfully reproduce the simple and predictive Yukawa textures usually associated with U(2) theories of flavor. These models allow for solutions to the solar and atmospheric neutrino problems that do not require altering successful predictions for the charged fermions or introducing sterile neutrinos. Although Yukawa matrices are hierarchical in the models they consider, the mixing between second- and third-gene… more
Date: February 1, 2000
Creator: Aranda, A.; Carone, C.D. & Lebed, R.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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U(2) flavor physics without U(2) symmetry

Description: The authors present a model of fermion masses based on a minimal, non-Abelian discrete symmetry that reproduces the Yukawa matrices usually associated with U(2) theories of flavor. Mass and mixing angle relations that follow from the simple form of the quark and charged lepton Yukawa textures are therefore common to both theories. They show that the differing representation structure of the horizontal symmetry allows for new solutions to the solar and atmospheric neutrino problems that do not i… more
Date: October 1, 1999
Creator: Aranda, A.; Carone, C.D. & Lebed, R.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A hexagonal theory of flavor

Description: The authors construct a supersymmetric theory of flavor based on the discrete gauge group (D{sub 6}){sup 2}, where D{sub 6} describes the symmetry of a regular hexagon under proper rotations in three dimensions. The representation structure of the group allows one to distinguish the third from the lighter two generations of matter fields, so that in the symmetry limit only the top quark Yukawa coupling is allowed and scalar superpartners of the first two generations are degenerate. Light fermio… more
Date: May 1, 1999
Creator: Carone, C.D. & Lebed, R.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

(S{sub 3}){sup 3} theories of flavor

Description: The author presents a supersymmetric theory of flavor based on the discrete flavor group (S{sub 3}){sup 3}. The model can account for the masses and mixing angles of the standard model, while maintaining sufficient sfermion degeneracy to evade the supersymmetric flavor problem. The author demonstrates that the model has a viable phenomenology and makes one very striking prediction: the nucleon decays predominantly to Kl where l is a first generation lepton. He shows that the modes n {yields} K{… more
Date: July 1, 1996
Creator: Carone, C.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Light U(1) gauge boson coupled to baryon number

Description: The authors discuss the phenomenology of a light U(1) gauge boson, {gamma}{sub B}, that couples only to baryon number. Gauging baryon number at high energies can prevent dangerous baryon-number violating operators that may be generated by Planck scale physics. However, they assume at low energies that the new U(1) gauge symmetry is spontaneously broken and that the {gamma}{sub B} mass m{sub B} is smaller than m{sub z}. They show for m{sub {Upsilon}} < m{sub B} < m{sub z} that the {gamma}B coupl… more
Date: June 1, 1995
Creator: Carone, C.D. & Murayama, Hitoshi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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